3 # Process this file with autoconf to produce a configure script.
7 m4_define([folly_version_str], m4_esyscmd_s([cat VERSION]))
9 AC_INIT([folly], m4_translit(folly_version_str, [:], [.]), [folly@fb.com])
11 # We assume all revisions are backwards incompatible.
12 LT_VERSION=folly_version_str:0
13 AC_SUBST([LT_VERSION])
15 AC_CONFIG_SRCDIR([Likely.h])
16 AC_CONFIG_HEADERS([config.h])
17 AX_PREFIX_CONFIG_H([folly-config.h], [folly], [config.h])
18 AC_CONFIG_AUX_DIR([build-aux])
20 AM_INIT_AUTOMAKE([foreign dist-bzip2 nostdinc subdir-objects])
22 AC_CONFIG_MACRO_DIR([m4])
24 AX_CONFIG_FEATURE_DEFAULT_DISABLED
27 [supports deprecated associative containers (hash_map/hash_set)],
28 [HAVE_DEPRECATED_ASSOC],
29 [Define if you want to support deprecated associative containers])
36 # Checks for programs.
39 AC_CXX_COMPILE_STDCXX_0X
41 # Be sure to add any -std option to CXXFLAGS before we invoke any
42 # AC_COMPILE_IFELSE() or similar macros. Any such macros that are invoked
43 # before we update CXXFLAGS will not be run with the same options that we use
44 # during the real build.
46 if test "x$ac_cv_cxx_compile_cxx0x_cxx" = xyes; then
49 if test "x$ac_cv_cxx_compile_cxx0x_gxx" = xyes; then
53 CXXFLAGS="$STD $CXXFLAGS"
55 # Checks for libraries.
56 AC_CHECK_LIB([glog],[openlog],[],[AC_MSG_ERROR(
57 [Please install google-glog library])])
58 AC_CHECK_LIB([gflags],[getenv],[],[AC_MSG_ERROR(
59 [Please install google-gflags library])])
64 [AC_MSG_ERROR(["Error: libssl required"])])
66 # check for boost libs
67 AX_BOOST_BASE([1.51.0], [], [AC_MSG_ERROR(
68 [Please install boost >= 1.51.0 (context, thread, regex, and system)])])
75 # Check for python interpreter
78 # Checks for header files.
80 AC_CHECK_HEADERS([fcntl.h features.h inttypes.h limits.h stdint.h stdlib.h string.h sys/time.h unistd.h mutex.h malloc.h emmintrin.h byteswap.h bits/functexcept.h bits/c++config.h])
82 AC_CHECK_HEADER(double-conversion/double-conversion.h, [], [AC_MSG_ERROR(
83 [Couldn't find double-conversion.h, please download from \
84 https://github.com/google/double-conversion/])], [])
85 AC_CHECK_LIB([double-conversion],[ceil],[],[AC_MSG_ERROR(
86 [Please install double-conversion library])])
88 AC_CHECK_LIB([event], [event_set], [], [AC_MSG_ERROR([Unable to find libevent])])
90 AC_CHECK_LIB([jemalloc], [xallocx])
92 # Checks for typedefs, structures, and compiler characteristics.
99 AC_CHECK_TYPE([__int128], AC_DEFINE([HAVE_INT128_T], [1], [Define if we have __int128]))
100 AC_CHECK_TYPES([ptrdiff_t, pthread_spinlock_t])
104 [folly_cv_prog_cc_ifunc],
107 #pragma GCC diagnostic error "-Wattributes"
108 extern "C" void (*test_ifunc(void))() { return 0; }
109 void func() __attribute__((ifunc("test_ifunc")));]
111 [folly_cv_prog_cc_ifunc=yes],
112 [folly_cv_prog_cc_ifunc=no])])
114 if test "$folly_cv_prog_cc_ifunc" = "yes"; then
115 AC_DEFINE([HAVE_IFUNC], [1], [Define to 1 if the compiler supports ifunc])
119 [for final and override support],
120 [folly_cv_c_final_override],
122 [AC_LANG_SOURCE[class C { virtual void f() final {} virtual void g() {} };
123 class D : public C { virtual void g() override {} };]],
124 [folly_cv_c_final_override=yes],
125 [folly_cv_c_final_override=no])])
127 if test "$folly_cv_c_final_override" = "yes"; then
129 override_val=override
136 [FINAL], [$final_val],
137 [Define to "final" if the compiler supports C++11 "final"])
139 [OVERRIDE], [$override_val],
140 [Define to "override" if the compiler supports C++11 "override"])
143 [for std::this_thread::sleep_for],
144 [folly_cv_func_this_thread_sleep_for],
149 void func() { std::this_thread::sleep_for(std::chrono::seconds(1)); }]],
150 [folly_cv_func_this_thread_sleep_for=yes],
151 [folly_cv_func_this_thread_sleep_for=no])])
153 if test "$folly_cv_func_this_thread_sleep_for" = yes; then
154 AC_DEFINE([HAVE_STD__THIS_THREAD__SLEEP_FOR], [1],
155 [Define to 1 if std::this_thread::sleep_for() is defined.])
159 [for constexpr strlen],
160 [folly_cv_func_constexpr_strlen],
164 static constexpr int val = strlen("foo");]],
165 [folly_cv_func_constexpr_strlen=yes],
166 [folly_cv_func_constexpr_strlen=no])])
168 if test "$folly_cv_func_constexpr_strlen" = yes; then
169 AC_DEFINE([HAVE_CONSTEXPR_STRLEN], [1],
170 [Define to 1 if strlen(3) is constexpr.])
175 [folly_cv_lib_libcpp],
178 #include <type_traits>
184 [folly_cv_lib_libcpp=yes],
185 [folly_cv_lib_libcpp=no])])
187 if test "$folly_cv_lib_libcpp" = yes; then
188 AC_DEFINE([USE_LIBCPP], [1], [Define to 1 if we're using libc++.])
192 [for usable std::is_trivially_copyable],
193 [folly_cv_decl_std_is_trivially_copyable],
196 #include <type_traits>
197 const bool val = std::is_trivially_copyable<bool>::value;]
199 [folly_cv_decl_std_is_trivially_copyable=yes],
200 [folly_cv_decl_std_is_trivially_copyable=no])])
202 if test "$folly_cv_decl_std_is_trivially_copyable" = yes; then
203 AC_DEFINE([HAVE_STD__IS_TRIVIALLY_COPYABLE], [1],
204 [Define to 1 if we have a usable std::is_trivially_copyable<T>
210 [folly_cv_decl_gflags_namespace],
213 #include <gflags/gflags.h>
214 void foo() { gflags::GetArgv(); }]
216 [folly_cv_decl_gflags_namespace=gflags],
219 #include <gflags/gflags.h>
220 void foo() { google::GetArgv(); }]
222 [folly_cv_decl_gflags_namespace=google],
223 [folly_cv_decl_gflags_namespace=error])])])
225 if test "$folly_cv_decl_gflags_namespace" = error; then
226 AC_MSG_ERROR([Cannot determine gflags namespace])
229 [GFLAGS_NAMESPACE], [$folly_cv_decl_gflags_namespace],
230 [Define to gflags namespace (usually "google" or "gflags")])
231 if test "$folly_cv_decl_gflags_namespace" != gflags; then
232 AC_DEFINE([UNUSUAL_GFLAGS_NAMESPACE], [1],
233 [Define to 1 if the gflags namespace is not "gflags"])
237 # Figure out if we support weak symbols. If not, we will link in some null
238 # stubs for functions that would otherwise be weak.
240 [for weak symbol support],
241 [folly_cv_prog_cc_weak_symbols],
244 extern "C" void configure_link_extern_weak_test() __attribute__((weak));
245 int main(int argc, char** argv) {
246 return configure_link_extern_weak_test == nullptr;
248 [folly_cv_prog_cc_weak_symbols="yes"],
249 [folly_cv_prog_cc_weak_symbols="no"])])
251 if test "$folly_cv_prog_cc_weak_symbols" = yes; then
252 AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
253 [Define to 1 if the linker supports weak symbols.])
257 [for vsnprintf reporting bad format strings],
258 [folly_cv_prog_vsnprintf_bad_format],
263 int main(int argc, char** argv) {
265 return vsnprintf(buf, sizeof(buf), "%", 1) < 0 ? 0 : 1;
267 [folly_cv_prog_vsnprintf_bad_format="yes"],
268 [folly_cv_prog_vsnprintf_bad_format="no"])])
270 if test "$folly_cv_prog_vsnprintf_bad_format" = yes; then
271 AC_DEFINE([HAVE_VSNPRINTF_ERRORS], [1],
272 [Define to 1 if the vsnprintf supports returning errors on bad format strings.])
275 AC_SEARCH_LIBS([cplus_demangle_v3_callback], [iberty_pic iberty])
276 if test "$ac_cv_search_cplus_demangle_v3_callback" != "no" ; then
277 AC_DEFINE([HAVE_CPLUS_DEMANGLE_V3_CALLBACK], [1],
278 [Define to 1 if we have cplus_demangle_v3_callback.])
281 # Check for clock_gettime(2). This is not in an AC_CHECK_FUNCS() because we
282 # want to link with librt if necessary.
283 AC_SEARCH_LIBS([clock_gettime], [rt],
285 [HAVE_CLOCK_GETTIME],
287 [Define to 1 if we support clock_gettime(2).]),
290 # Check for pthread_atfork(3). This is not in an AC_CHECK_FUNCS() because we
291 # want to include pthread.h if necessary.
293 [for pthread_atfork support],
294 [folly_cv_prog_cc_pthread_atfork],
298 void func() {pthread_atfork(NULL, NULL, NULL);}]
300 [folly_cv_prog_cc_pthread_atfork=yes],
301 [folly_cv_prog_cc_pthread_atfork=no])])
303 if test "$folly_cv_prog_cc_pthread_atfork" = "yes"; then
304 AC_DEFINE([HAVE_PTHREAD_ATFORK], [1], [Define to 1 if the compiler supports pthread_atfork])
307 # Checks for library functions.
308 AC_CHECK_FUNCS([getdelim \
320 if test "$ac_cv_func_pthread_yield" = "no"; then
321 AC_CHECK_HEADERS([sched.h])
322 AC_CHECK_FUNCS([sched_yield])
325 AC_CHECK_HEADER([lz4.h], AC_CHECK_LIB([lz4], [LZ4_decompress_safe]))
326 AC_CHECK_HEADER([snappy.h], AC_CHECK_LIB([snappy], [main]))
327 AC_CHECK_HEADER([zlib.h], AC_CHECK_LIB([z], [main]))
328 AC_CHECK_HEADER([lzma.h], AC_CHECK_LIB([lzma], [main]))
330 # Include directory that contains "folly" so #include <folly/Foo.h> works
331 AM_CPPFLAGS='-I$(top_srcdir)/..'
332 AM_CPPFLAGS="$AM_CPPFLAGS $BOOST_CPPFLAGS"
333 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CONTEXT_LIB $BOOST_THREAD_LIB $BOOST_FILESYSTEM_LIB"
334 AM_LDFLAGS="$AM_LDFLAGS $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread"
336 AC_SUBST([AM_CPPFLAGS])
337 AC_SUBST([AM_LDFLAGS])
339 AM_CONDITIONAL([HAVE_STD_THREAD], [test "$ac_cv_header_features" = "yes"])
340 AM_CONDITIONAL([HAVE_X86_64], [test "$build_cpu" = "x86_64"])
341 AM_CONDITIONAL([HAVE_LINUX], [test "$build_os" == "linux-gnu"])
342 AM_CONDITIONAL([HAVE_WEAK_SYMBOLS],
343 [test "$folly_cv_prog_cc_weak_symbols" = "yes"])
344 AM_CONDITIONAL([HAVE_BITS_FUNCTEXCEPT], [test "$ac_cv_header_bits_functexcept_h" = "yes"])
347 AC_CONFIG_FILES([Makefile
349 test/function_benchmark/Makefile])